Pertec Tape Drive Interface Musings
aek at bitsavers.org
Wed Jun 10 10:47:53 CDT 2015
On 6/10/15 8:40 AM, Dennis Boone wrote:
> > > Using dd to read tapes to disk discards the block size information.
> > And that is precisely why I'm thinking of an ad-hoc interface rather
> > than just plugging a SCSI drive into a UNIX box.
> It's eminently possible to image tapes sanely on a unix box. See e.g.:
> The main limitation seems to be that it's hard to get the (broken) data
> from a block that had a read error when using SCSI hardware. There's
> probably a way around this if one digs into lower layers of SCSI magic;
> I haven't gone looking.
I need to figure out why this program also doesn't deal with tape errors well.
If you get an error, it will go into an endless loop creating -1 byte records.
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